Source : Webster's Revised Unabridged Dictionary (1913)
Lungwort \Lung"wort`\, n. (Bot.)
(a) An herb of the genus {Pulmonaria} ({P. officinalis}), of
Europe; -- so called because the spotted appearance of
the leaves resembles that of a diseased lung.
(b) Any plant of the genus {Mertensia} (esp. {M. Virginica}
and {M. Sibirica}) plants nearly related to {Pulmonaria}.
The American lungwort is {Mertensia Virginica}, Virginia
cowslip. --Gray.
{Cow's lungwort} mullein.
{Sea lungwort}, {Mertensia maritima}, found on the seacoast
of Northern Europe and America.
{Tree lungwort}, a lichen ({Sticta pulmonacea}) growing on
trees and rocks. The thallus is lacunose, and in
appearance somewhat resembles the lungs, for diseases of
which it was once thought a remedy.